Update: Jan.6, 2017
On Sunday, Jan. 8, 2017. WSDOT crews installed a temporary traffic signal system on the SR 25/Columbia River Bridge at Northport in Stevens County (MP 114), about 5 miles south of the Canadian border. The signal will allow single-lane, alternating traffic, through a 2,500 foot section of SR 25. Drivers should expect short delays.
When the signal system is in operationtraffic will be controlled without the need for staffed flagging crews. The exact time of activation is not yet known.
With signalized control, and the revised counter balance, the earlier “one truck at a time” restriction has been lifted. However, the bridge will remain restricted to legal loads only. No overweight or oversize loads will be allowed until further notice.
Bridge Restrictions and Repairs-January 2017
Bridge inspections by Washington State Department of Transportation bridge engineers revealed extensive corrosion on the State Route 25 bridge that crosses the Columbia River at Northport.
As a precaution, crews will reduce SR 25 to a single lane, with alternating traffic controlled by a temporary traffic signal. This restriction will remain in place 24 hours a day, seven days a week.
An in-depth review and assessment in December indicated that heavy rust has penetrated large bolts that provide the connection of the steel trusses to the piers at the north and south ends of the span and weight restrictions would be needed.
Bridge engineers at WSDOT headquarters in Olympia have designed a temporary counter balance to reduce the stress on the bolts while plans and specifications for permanent repairs can be formulated. It may take up to six months for the repairs to be completed. No cost estimates are available at this time.
The 1,500 foot-long, steel-truss bridge was constructed in 1948. Located just 5 miles south of the US/Canada border, about 500-800 vehicles use the bridge every day with trucks comprising around 40 percent of that total.
SR 25 Columbia river Bridge at Northport (Looking downstream. North is on the right.)
This project is located in Stevens County, north of Colville, about 5 miles south of the Canadian border.